Hair clamp



Feb. 18, 1969 w. H. BRASKAMP HAIR CLAMP Filed June 22, 1966 UnitedStates Patent 3,428,057 HAIR CLAMP Willem Hendrik Braskamp, Voorburg,Netherlands, assignor to Indoheem N.V., The Hague, Netherlands FiledJune 22, 1966, Ser. No. 559,528 Claims priority, applicationNetherlands, June 23, 1965,

6508055 US. Cl. 132--36 Int. Cl. A45d 2/36 9 Claims ABSTRACT OF THEDISCLOSURE This invention relates to hair clamps of the type which, forexample, can be heated on a separate heated tube and then subsequentlyapplied to a roller with hair coiled thereon.

According to the invention, there is provided a clamp which consists oftwo hinged parts, each of which is provided with a metal plate having asynthetic or plasticlike material arranged at the inside thereof, saidparts being pressed together by a spring and being provided with meansfor opening the clamp. In this type of clamp, the metal plates serve toconduct accumulated heat more quickly to those parts of the innersurface of the clamp Where contact is made with the roller.

It is an object of the invention to furnish a hair clamp in which thetime required for the accumulation of heat is minimized, while a furtherobject is to enable accumulating heat while retaining a simple clampconstruction.

The objects of the invention are achieved by the use of a featurewhereby the plates mentioned above project with narrow inwardly directedparts through the layer of synthetic material, which inwardly directedparts extend perhaps a short distance beyond the layer of syntheticmaterial. As such a clamp is heated, the plate comes into direct contactwith the heating tube via the inwardly directed parts, this contactbeing insured by the feature that these parts project inwards a shortdistance beyond the inner wall of the clamp. The heating of thesynthetic material, in which heat must also be accumulated, takes placefrom the inside via the metal plate as well as directly by radiation orconduction from the heating tube. It has been found that in this way, avery rapid heating of the clamp is possible, and good heat distributionis retained during the transfer of the heat. The inwardly directed partsof the plate, via which the heat is transferred to the plate, arepreferably present at the ends of the clamp, and thus of the plate, inconsequence of which these ends exercise no adverse influence on thehair on the roller since the roller as a rule is thickest in the middleand tapers towards the ends.

In order to insure a greater accumulation capacity in the clamp, theplate preferably has a thickness which is at least equal to thethickness of the layer of synthetic material between the plate and theinner surface of the clamp. The plate preferably has a considerablygreater thickness.

As will be shown, each of the hinged parts can have a cover member whichis hinged at an edge thereof and is integral therewith, which covermember can be folded against the outside of the parts of the clamp andcan be retained in this position by a spring. The cover member maycomprise a part adapted to cover the outside of the corresponding partof the clamp, each plate then being enclosed between the cover memberand the clamp. The plate can be fitted after the clamp has been made,for which purpose the clamp is provided with openings for the inwardlydirected parts. It is of course also possible to embed the plate in themass of synthetic or plasticlike material during the molding of theclamp.

The invention will now be explained more fully with reference to theaccompanying drawing in which:

FIG. 1 is a side elevation of a clamp provided in accordance with theinvention;

FIG. 2 shows, in side view, the clamp body in open position, without itsclamping spring and without the metal plates;

FIG. 3 is a bottom view of the clamp of FIGS. 1 and 2;

FIG. 4 is a top view of the metal plate; and

FIG. 5 is an end view of the plate.

The clamp shown in FIG. 1 consists of two parts or elements 1 and 2,which are pressed together by a spring 3. Mover members 1a and 2a havinghandles 4 and 5, are pivotally connected with elements 1 and 2 at 6 andmay be of the same material as the latter and integral therewith.Handles 4 and 5 are L-shaped parts extending perpendicularly from thecover members. A metal plate (aluminum, steel or the like) is supportedon or in each of the parts 1 and 2 of the clamp, as shown by dottedlines 7 in FIG. 1. These metal plates constitute heat reservoirs.

As FIGS. 2 and 3 show, the clamp consists of parts forming a one-pieceunit. As appears in FIG. 3, openings 8 are provided at the ends of theparts 1 and 2, and the parts 1 and 2 are formed for accommodating inface-toface relation and with a close fit the metal plates 10 shown inFIGS. 4 and 5. Each plate 10 has a suitable curved form (correspondingto that of elements 1 and 2 and the inner surfaces of the latter) andincludes legs or projections which extend through the correspondingopenings 8. The cover members 1a and 2a respectively have a curvedsurface 12 which corresponds to the curvature on the outside of therelated plate 10. These parts 4 and 5 are constructed in such a way thatin the position in which they are folded against the outside of theclamp parts 1 and 2 respectively they cover the latter fully, so thatthe plate 10 is completely sandwiched or enclosed therebetween. This isnecessary to avoid heat losses. It is also preferred for the plates tobe in face-to-face contact with the surfaces of elements 1 and 2 toavoid irregular heat transfer due to air gaps. The parts '1 and 2 of theclamp are provided with lateral flanges 9 between which the covermembers and metal plates fit.

As appears from FIG. 1, the legs 11 extend through the openings 8 andtherefore, contact with the heating tube (not shown) takes place viathese legs. These legs are relatively small occupying less than 5% andeven less of the inner surface area of elements 1 and 2 so that heattransfer to the hair of the user will normally be through the elements 1and 2 alone. Elements 1 and 2 may be of conventional plastic-likematerials such as polyethylene, rubber or the like which has a lowthermal conductivity relative to plates 10.

The elements 1 and 2 are preferably of arcuate crosssection toaccommodate rollers or beating tubes. The legs in the metal platesextend at least to the surface of the elements 1 and 2 and perhaps a fewhundredths of an inch therebeyond.

By way of example but not of limitation, plate 10 may have a length ofabout two inches between its ends whereat legs 11 are located and athickness of about to A; of an inch, parts 1 and 2 having a slightlylesser thickness.

The surrounding and other related parts will be of suitable dimensionscorresponding to the above.

What is claimed is:

1. A hair clamp adapted for being heated by a source of heat and forbeing subsequently removed from said source and applied to a memberwhich has hair engaged thereon, said clamp comprising first and secondelements adapted to accommodate said member therebetween, meanshingeably connecting said elements to form a clamplike structure, metalmembers supported on said elements and having a heat conductivity whichis large relative to that of said elements to serve as a heat reservoirto dissipate heat through said elements for application to hair on saidmember, and cover members respectively hinged to said elements forselectively sandwiching the metal members against said elements.

2. A hair clamp adapted for being heated by a source of heat and forbeing subsequently removed from said source and applied to a memberwhich has hair engaged thereon, said clamp comprising first and secondelements adapted to accommodate said member tiherebetween, meanshingeably connecting said elements to form a clamplike structure, heatreservoir means carried by said elements and adapted for making directcontact with said source of heat and to dissipate said heat at least inpart through said elements for application to said hair on said member,said heat reservoir means having a heat conductivity which is largerelatively to that of said elements, said elements being provided withsurfaces for selectively engaging said source of heat and said member,said heat reservoir means including metal members supported on saidelements and including projections extending through said elements atleast to the surfaces thereof, and cover members respectively hinged tosaid elements for selectively sandwiohing the metal members against thesaid elements.

3. A clamp as claimed in claim 2 wherein the metal members are platescorresponding in shape to said surfaces and of a thickness exceeding thespacing thereof from said surfaces, said plates and elements being infaceto-face relation for the transfer of heat from the plates to saidelements.

4. A clamp as claimed in claim 3 comprising handles on said covermembers and wherein said elements and cover members are of the samematerial.

5. A clamp as claimed in claim 4 wherein the said elements include endflanges between which the metal members are located.

6. A clamp as claimed in claim 5 wherein the said elements are providedwith openings adjacent the flanges and said metal members at theiropposite ends include legs constituting said projections and extendingthrough said openings past the said surfaces of said elements.

7. A clamp as claimed in claim 6 wherein said elements and metal membersare of arcuate cross-section.

8. A clamp as claimed in claim 2 comprising spring means urging thecover members against said metal members and elements and further urgingthe elements together.

9. A clamp as claimed in claim 8 wherein said elements and cover membersare of a plastic-like material and said handles extend perpendicularlyfrom the cover members and are of L shape.

References Cited UNITED STATES PATENTS 1,937,599 12/1933 Shelton 132--363,126,895 3/1964 Leclabart 132-36 ROBERT PESHOCK, Primary Examiner.

JAMES W. MITCHELL, Assistant Examiner.

